Li Mu, a modern construction site technician, became a slave in a Tang Dynasty kiln factory. I thought I was going to die from exhaustion in this damn place, but unexpectedly the system was activated and the cement formula was obtained! Starting from making bricks to stir up troubles in Chang'an, the Guanlong nobles want to get rid of him? Li Yifu wants to trick him? Changsun Wuji wants to kill him? Sorry, cement and gunpowder are used to treat all kinds of dissatisfaction. Let's see how a little man changes his fate against the odds and ascends to the position of powerful minister step by step!